Dentist Rajesh Talwar, accused of murdering his daughter Aarushi and domestic help Hemraj, was today sent to judicial custody till June 6 by a court in Noida after expiry of his three-day police remand.

Investigators did not seek further extension of his custody and told Chief Judicial Magistrate A K Singh that Talwar was not cooperating with the police following which he was remanded in judicial custody till Friday.

The police submitted before the court that they wanted to conduct narco-analysis and brain mapping tests on him to "unravel" the sensational killings.

Talwar, who allegedly killed Aarushi and Hemraj on May 16, was produced before the court in the afternoon as his three-day police custody was to end this evening.